mqtt.md

MQTT topics and message payloads

Command station

---

Enable main track DCC output

Event topic:
"<topic root>/cs/<command station name>/mte"

Command topics:
"<topic root>/cs/<command station name>/mte/get"
"<topic root>/cs/<command station name>/mte/set"

Payload: true | false

Loco

---

Loco direction

Event topic:
"<topic root>/loco/<loco name>/dir"

Command topics:
"<topic root>/loco/<loco name>/dir/get"
"<topic root>/loco/<loco name>/dir/set"
"<topic root>/loco/<loco name>/dir/toggle"

Payload: true | false

true  := forward  direction
false := backward direction

---

Loco speed

Event topic:
"<topic root>/loco/<loco name>/speed"

Command topics:
"<topic root>/loco/<loco name>/speed/get"
"<topic root>/loco/<loco name>/speed/set"
    
Payload: number

number := speed range 0..126

Command topic:
"<topic root>/loco/<loco name>/speed/stop"

Payload: none

Emergency stop - the loco is stopped immediately ignoring deceleration settings

Command topic:
"<topic root>/loco/<loco name>/speed/add"

Payload: ±delta

Adds delta to speed - delta can be a positive or negative number

---

Loco function

Event topic:
"<topic root>/loco/<loco name>/<loco function>

Command topics:
"<topic root>/loco/<loco name>/<loco function>/get"
"<topic root>/loco/<loco name>/<loco function>/set"
"<topic root>/loco/<loco name>/<loco function>/toggle"

Payload: true | false

true  := function on
false := function off